Quick Info: Placement of Servers in Microsoft IT Exchange Server 2010 Environment

If you have been through the Architecture and Design document published by Microsoft IT you would get some quick information on placements on Exchange Servers at Microsoft spread across for 4 datacenters…..

Server role

Redmond

Dublin

Singapore

Sao Paulo

Technology

Mailbox

41

16

16

4

Exchange DAGs
Hub Transport

11

5

4

0

Automatic load balancing through Mail Submission Service
Hardware load balancers for incoming mail connectivity
Client Access

28

14

12

0

Hardware load balancers internally and externally
Unified Messaging

5

3

3

0

Automatic round-robin load balancing between Unified Messaging servers
Multiple voice over IP (VoIP) gateways per dial plan
Multiple-Role

0

0

0

2

Not applicable

And a quick look at the DAG Configurations….

DAG model Location Number of actual mailboxes Number of supported mailboxes Storage architecture Disk type
11 node Redmond

29,913

33,000

JBOD

3.5” 1-terabyte SAS
11 node Redmond

28,861

33,000

JBOD

3.5” 1-terabyte SAS
10 node Redmond

26,171

30,000

JBOD

3.5” 1-terabyte SAS
16 node Dublin

33,260

48,000

JBOD

3.5” 1-terabyte SAS
16 node Singapore

37,698

48,000

JBOD

3.5” 1-terabyte SAS
4 node Sao Paulo

2,299

12,000

JBOD

3.5” 1-terabyte SAS

This is a good document to refer if you are designing Enterprise Messaging environments of similar sizes. Download it here http://www.microsoft.com/downloads/details.aspx?FamilyID=accec9cd-9c09-4f7e-91c6-41f0e201b680&displayLang=en


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